There's an interesting program called "Air Emergency". One episode involves an Avianca Airlines jet flying from Columbia to NYC. The pilot spoke poor English, inadequate to do his job properly, and assigned all communication to the first officer. Had the pilot spoken proper English, as he should have, there would have been direct communication rather than relayed and translated, and half of the passengers might not have died. That pilot should never have been allowed to fly to this country until such time as he spoke adequate English. No English? No USA.